Question

TÌM X :

5,75 x X + 4,45 x X = 30 

Answer 1

\(5,75\times x+4,45\times x=30\\ \Leftrightarrow x\left(5,75+4,45\right)=30\\ \Leftrightarrow10,2x=30\\ \Leftrightarrow x=30:10,2\\ \Leftrightarrow x=\dfrac{50}{17}\)

Vậy \(x=\dfrac{50}{17}\)

Answer 2

= (5,75 + 4,45) x X

= 10,2 x X

X = 30 : 10,2

X = 50/17